Cammed 01 GT running lean, slow acceleration. Stalling when shifting into gear.

PDHSB

Member
Jun 11, 2020
37
5
18
VA
Recently put in the Comp stage 2 camshafts along with springs. My 0-60 is very sluggish, around 8-9 seconds depending on the pull. I can smell how rich the engine is running just from the smell. Also, when I shift into gear, I almost always stall, have to open the throttle just to keep it alive.

Did a compression test, looks like about 180 on all cylinders but #5 which is at 120. I'm not sure if I have a vacuum leak, maybe an exhaust leak or something else. I should mention that I have a Dorman intake manifold and it's definitely holding me back in power, but this is far below stock performance.
 
Do you think the short intake runners could be holding me back that much on the Dorman? Should I go to a junkyard and find a PI manifold or should I just go with a Ford Racing one for $250?

Yes actually. The Dorman intakes are known to cause more problems than even a stock brand manifold. Start with a pi intake (used pi from junkyard in good shape or Ford Racing. You can get 10-15 wheel hp just from switching this, provided everything else is running good together.